摘要
底部两层框剪结构多层砖房在城市建设中应用广泛,这种房屋的特点是由两种承重和抗侧力体系构成的。编制了剪切型结构弹塑性动力时程分析通用程序,在时间步长△t内用二次曲线拟合动力反应的速度和加速度,采用求解动力响应的非线性拟动力方程法。探讨了底部两层框剪砖房在7度罕遇地震作用的层间位移角随房屋下部三层的抗侧刚度比K1:K2:K3、屈服强度系数比ξ1:ξ2:ξ3、房屋层数和下部抗震墙类型等因素的变化情况。可供工程设计和编制有关的规范、规程参考。
Masonry buildings with R/C frame-shear wall in two bottom stories are widely used in city construction,which include two kinds of lateral force resistant systems. A computer program for dynamic elasto-plastic analysis is designed. Imitative dynamic equation method is set up to calculate non-linear dynamic responses of structure,in which quadratic curve is used to fit history curves of velocity and acceleration within time step Δt.The method is clear in physical concept and calculation procedure, and overcomes the accumulative error in calculation.On the basis of analyses,main factors that have influence on seismic resistant behavior are discussed. It can be used as references in engineering design and related codes compiling.
出处
《振动与冲击》
EI
CSCD
北大核心
2005年第6期111-113,共3页
Journal of Vibration and Shock
关键词
底部两层框剪砖房
抗震性能
影响因素
弹塑性动力分析
masonry building with R/C frame-wall in the two bottom, seismic resistant behavior, influence factor, elasto-plastic seismic response analysis
